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-rw-r--r--net/ipv6/ila/ila_lwt.c7
-rw-r--r--net/ipv6/ioam6_iptunnel.c8
-rw-r--r--net/ipv6/ip6_fib.c9
-rw-r--r--net/ipv6/ip6_offload.c2
-rw-r--r--net/ipv6/netfilter.c1
-rw-r--r--net/ipv6/route.c38
-rw-r--r--net/ipv6/rpl_iptunnel.c14
-rw-r--r--net/ipv6/seg6_iptunnel.c14
-rw-r--r--net/ipv6/seg6_local.c8
-rw-r--r--net/ipv6/tcp_ipv6.c10
-rw-r--r--net/ipv6/xfrm6_policy.c8
11 files changed, 66 insertions, 53 deletions
diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c
index 0601bad79822..ff7e734e335b 100644
--- a/net/ipv6/ila/ila_lwt.c
+++ b/net/ipv6/ila/ila_lwt.c
@@ -58,7 +58,9 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
return orig_dst->lwtstate->orig_output(net, sk, skb);
}
+ local_bh_disable();
dst = dst_cache_get(&ilwt->dst_cache);
+ local_bh_enable();
if (unlikely(!dst)) {
struct ipv6hdr *ip6h = ipv6_hdr(skb);
struct flowi6 fl6;
@@ -86,8 +88,11 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
goto drop;
}
- if (ilwt->connected)
+ if (ilwt->connected) {
+ local_bh_disable();
dst_cache_set_ip6(&ilwt->dst_cache, dst, &fl6.saddr);
+ local_bh_enable();
+ }
}
skb_dst_set(skb, dst);
diff --git a/net/ipv6/ioam6_iptunnel.c b/net/ipv6/ioam6_iptunnel.c
index 7563f8c6aa87..bf7120ecea1e 100644
--- a/net/ipv6/ioam6_iptunnel.c
+++ b/net/ipv6/ioam6_iptunnel.c
@@ -351,9 +351,9 @@ do_encap:
goto drop;
if (!ipv6_addr_equal(&orig_daddr, &ipv6_hdr(skb)->daddr)) {
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&ilwt->cache);
- preempt_enable();
+ local_bh_enable();
if (unlikely(!dst)) {
struct ipv6hdr *hdr = ipv6_hdr(skb);
@@ -373,9 +373,9 @@ do_encap:
goto drop;
}
- preempt_disable();
+ local_bh_disable();
dst_cache_set_ip6(&ilwt->cache, dst, &fl6.saddr);
- preempt_enable();
+ local_bh_enable();
}
skb_dst_drop(skb);
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 31d77885bcae..83e4f9855ae1 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -966,6 +966,7 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
if (!fib6_nh->rt6i_pcpu)
return;
+ rcu_read_lock();
/* release the reference to this fib entry from
* all of its cached pcpu routes
*/
@@ -974,7 +975,9 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
struct rt6_info *pcpu_rt;
ppcpu_rt = per_cpu_ptr(fib6_nh->rt6i_pcpu, cpu);
- pcpu_rt = *ppcpu_rt;
+
+ /* Paired with xchg() in rt6_get_pcpu_route() */
+ pcpu_rt = READ_ONCE(*ppcpu_rt);
/* only dropping the 'from' reference if the cached route
* is using 'match'. The cached pcpu_rt->from only changes
@@ -988,6 +991,7 @@ static void __fib6_drop_pcpu_from(struct fib6_nh *fib6_nh,
fib6_info_release(from);
}
}
+ rcu_read_unlock();
}
struct fib6_nh_pcpu_arg {
@@ -2510,7 +2514,8 @@ int __init fib6_init(void)
goto out_kmem_cache_create;
ret = rtnl_register_module(THIS_MODULE, PF_INET6, RTM_GETROUTE, NULL,
- inet6_dump_fib, RTNL_FLAG_DUMP_UNLOCKED);
+ inet6_dump_fib, RTNL_FLAG_DUMP_UNLOCKED |
+ RTNL_FLAG_DUMP_SPLIT_NLM_DONE);
if (ret)
goto out_unregister_subsys;
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index bd5aff97d8b1..9822163428b0 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -236,7 +236,7 @@ INDIRECT_CALLABLE_SCOPE struct sk_buff *ipv6_gro_receive(struct list_head *head,
if (unlikely(!iph))
goto out;
- NAPI_GRO_CB(skb)->inner_network_offset = off;
+ NAPI_GRO_CB(skb)->network_offsets[NAPI_GRO_CB(skb)->encap_mark] = off;
flush += ntohs(iph->payload_len) != skb->len - hlen;
diff --git a/net/ipv6/netfilter.c b/net/ipv6/netfilter.c
index 53d255838e6a..5d989d803009 100644
--- a/net/ipv6/netfilter.c
+++ b/net/ipv6/netfilter.c
@@ -36,6 +36,7 @@ int ip6_route_me_harder(struct net *net, struct sock *sk_partial, struct sk_buff
.flowi6_uid = sock_net_uid(net, sk),
.daddr = iph->daddr,
.saddr = iph->saddr,
+ .flowlabel = ip6_flowinfo(iph),
};
int err;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index bbc2a0dd9314..8d72ca0b086d 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -87,7 +87,8 @@ struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie);
static unsigned int ip6_default_advmss(const struct dst_entry *dst);
INDIRECT_CALLABLE_SCOPE
unsigned int ip6_mtu(const struct dst_entry *dst);
-static struct dst_entry *ip6_negative_advice(struct dst_entry *);
+static void ip6_negative_advice(struct sock *sk,
+ struct dst_entry *dst);
static void ip6_dst_destroy(struct dst_entry *);
static void ip6_dst_ifdown(struct dst_entry *,
struct net_device *dev);
@@ -637,6 +638,8 @@ static void rt6_probe(struct fib6_nh *fib6_nh)
rcu_read_lock();
last_probe = READ_ONCE(fib6_nh->last_probe);
idev = __in6_dev_get(dev);
+ if (!idev)
+ goto out;
neigh = __ipv6_neigh_lookup_noref(dev, nh_gw);
if (neigh) {
if (READ_ONCE(neigh->nud_state) & NUD_VALID)
@@ -1408,6 +1411,7 @@ static struct rt6_info *rt6_get_pcpu_route(const struct fib6_result *res)
struct rt6_info *prev, **p;
p = this_cpu_ptr(res->nh->rt6i_pcpu);
+ /* Paired with READ_ONCE() in __fib6_drop_pcpu_from() */
prev = xchg(p, NULL);
if (prev) {
dst_dev_put(&prev->dst);
@@ -2770,24 +2774,24 @@ INDIRECT_CALLABLE_SCOPE struct dst_entry *ip6_dst_check(struct dst_entry *dst,
}
EXPORT_INDIRECT_CALLABLE(ip6_dst_check);
-static struct dst_entry *ip6_negative_advice(struct dst_entry *dst)
+static void ip6_negative_advice(struct sock *sk,
+ struct dst_entry *dst)
{
struct rt6_info *rt = dst_rt6_info(dst);
- if (rt) {
- if (rt->rt6i_flags & RTF_CACHE) {
- rcu_read_lock();
- if (rt6_check_expired(rt)) {
- rt6_remove_exception_rt(rt);
- dst = NULL;
- }
- rcu_read_unlock();
- } else {
- dst_release(dst);
- dst = NULL;
+ if (rt->rt6i_flags & RTF_CACHE) {
+ rcu_read_lock();
+ if (rt6_check_expired(rt)) {
+ /* counteract the dst_release() in sk_dst_reset() */
+ dst_hold(dst);
+ sk_dst_reset(sk);
+
+ rt6_remove_exception_rt(rt);
}
+ rcu_read_unlock();
+ return;
}
- return dst;
+ sk_dst_reset(sk);
}
static void ip6_link_failure(struct sk_buff *skb)
@@ -3601,7 +3605,7 @@ int fib6_nh_init(struct net *net, struct fib6_nh *fib6_nh,
if (!dev)
goto out;
- if (idev->cnf.disable_ipv6) {
+ if (!idev || idev->cnf.disable_ipv6) {
NL_SET_ERR_MSG(extack, "IPv6 is disabled on nexthop device");
err = -EACCES;
goto out;
@@ -6341,12 +6345,12 @@ static int ipv6_sysctl_rtcache_flush(struct ctl_table *ctl, int write,
if (!write)
return -EINVAL;
- net = (struct net *)ctl->extra1;
- delay = net->ipv6.sysctl.flush_delay;
ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
if (ret)
return ret;
+ net = (struct net *)ctl->extra1;
+ delay = net->ipv6.sysctl.flush_delay;
fib6_run_gc(delay <= 0 ? 0 : (unsigned long)delay, net, delay > 0);
return 0;
}
diff --git a/net/ipv6/rpl_iptunnel.c b/net/ipv6/rpl_iptunnel.c
index a013b92cbb86..2c83b7586422 100644
--- a/net/ipv6/rpl_iptunnel.c
+++ b/net/ipv6/rpl_iptunnel.c
@@ -212,9 +212,9 @@ static int rpl_output(struct net *net, struct sock *sk, struct sk_buff *skb)
if (unlikely(err))
goto drop;
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&rlwt->cache);
- preempt_enable();
+ local_bh_enable();
if (unlikely(!dst)) {
struct ipv6hdr *hdr = ipv6_hdr(skb);
@@ -234,9 +234,9 @@ static int rpl_output(struct net *net, struct sock *sk, struct sk_buff *skb)
goto drop;
}
- preempt_disable();
+ local_bh_disable();
dst_cache_set_ip6(&rlwt->cache, dst, &fl6.saddr);
- preempt_enable();
+ local_bh_enable();
}
skb_dst_drop(skb);
@@ -268,23 +268,21 @@ static int rpl_input(struct sk_buff *skb)
return err;
}
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&rlwt->cache);
- preempt_enable();
if (!dst) {
ip6_route_input(skb);
dst = skb_dst(skb);
if (!dst->error) {
- preempt_disable();
dst_cache_set_ip6(&rlwt->cache, dst,
&ipv6_hdr(skb)->saddr);
- preempt_enable();
}
} else {
skb_dst_drop(skb);
skb_dst_set(skb, dst);
}
+ local_bh_enable();
err = skb_cow_head(skb, LL_RESERVED_SPACE(dst->dev));
if (unlikely(err))
diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c
index a75df2ec8db0..098632adc9b5 100644
--- a/net/ipv6/seg6_iptunnel.c
+++ b/net/ipv6/seg6_iptunnel.c
@@ -464,23 +464,21 @@ static int seg6_input_core(struct net *net, struct sock *sk,
slwt = seg6_lwt_lwtunnel(orig_dst->lwtstate);
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&slwt->cache);
- preempt_enable();
if (!dst) {
ip6_route_input(skb);
dst = skb_dst(skb);
if (!dst->error) {
- preempt_disable();
dst_cache_set_ip6(&slwt->cache, dst,
&ipv6_hdr(skb)->saddr);
- preempt_enable();
}
} else {
skb_dst_drop(skb);
skb_dst_set(skb, dst);
}
+ local_bh_enable();
err = skb_cow_head(skb, LL_RESERVED_SPACE(dst->dev));
if (unlikely(err))
@@ -536,9 +534,9 @@ static int seg6_output_core(struct net *net, struct sock *sk,
slwt = seg6_lwt_lwtunnel(orig_dst->lwtstate);
- preempt_disable();
+ local_bh_disable();
dst = dst_cache_get(&slwt->cache);
- preempt_enable();
+ local_bh_enable();
if (unlikely(!dst)) {
struct ipv6hdr *hdr = ipv6_hdr(skb);
@@ -558,9 +556,9 @@ static int seg6_output_core(struct net *net, struct sock *sk,
goto drop;
}
- preempt_disable();
+ local_bh_disable();
dst_cache_set_ip6(&slwt->cache, dst, &fl6.saddr);
- preempt_enable();
+ local_bh_enable();
}
skb_dst_drop(skb);
diff --git a/net/ipv6/seg6_local.c b/net/ipv6/seg6_local.c
index 24e2b4b494cb..c434940131b1 100644
--- a/net/ipv6/seg6_local.c
+++ b/net/ipv6/seg6_local.c
@@ -941,8 +941,8 @@ static int input_action_end_dx6(struct sk_buff *skb,
if (static_branch_unlikely(&nf_hooks_lwtunnel_enabled))
return NF_HOOK(NFPROTO_IPV6, NF_INET_PRE_ROUTING,
- dev_net(skb->dev), NULL, skb, NULL,
- skb_dst(skb)->dev, input_action_end_dx6_finish);
+ dev_net(skb->dev), NULL, skb, skb->dev,
+ NULL, input_action_end_dx6_finish);
return input_action_end_dx6_finish(dev_net(skb->dev), NULL, skb);
drop:
@@ -991,8 +991,8 @@ static int input_action_end_dx4(struct sk_buff *skb,
if (static_branch_unlikely(&nf_hooks_lwtunnel_enabled))
return NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING,
- dev_net(skb->dev), NULL, skb, NULL,
- skb_dst(skb)->dev, input_action_end_dx4_finish);
+ dev_net(skb->dev), NULL, skb, skb->dev,
+ NULL, input_action_end_dx4_finish);
return input_action_end_dx4_finish(dev_net(skb->dev), NULL, skb);
drop:
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 4c3605485b68..729faf8bd366 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1272,15 +1272,10 @@ static void tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
/* sk->sk_state == TCP_LISTEN -> for regular TCP_SYN_RECV
* sk->sk_state == TCP_SYN_RECV -> for Fast Open.
*/
- /* RFC 7323 2.3
- * The window field (SEG.WND) of every outgoing segment, with the
- * exception of <SYN> segments, MUST be right-shifted by
- * Rcv.Wind.Shift bits:
- */
tcp_v6_send_ack(sk, skb, (sk->sk_state == TCP_LISTEN) ?
tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
tcp_rsk(req)->rcv_nxt,
- req->rsk_rcv_wnd >> inet_rsk(req)->rcv_wscale,
+ tcp_synack_window(req) >> inet_rsk(req)->rcv_wscale,
tcp_rsk_tsval(tcp_rsk(req)),
READ_ONCE(req->ts_recent), sk->sk_bound_dev_if,
&key, ipv6_get_dsfield(ipv6_hdr(skb)), 0,
@@ -1444,7 +1439,6 @@ static struct sock *tcp_v6_syn_recv_sock(const struct sock *sk, struct sk_buff *
*/
newsk->sk_gso_type = SKB_GSO_TCPV6;
- ip6_dst_store(newsk, dst, NULL, NULL);
inet6_sk_rx_dst_set(newsk, skb);
inet_sk(newsk)->pinet6 = tcp_inet6_sk(newsk);
@@ -1455,6 +1449,8 @@ static struct sock *tcp_v6_syn_recv_sock(const struct sock *sk, struct sk_buff *
memcpy(newnp, np, sizeof(struct ipv6_pinfo));
+ ip6_dst_store(newsk, dst, NULL, NULL);
+
newsk->sk_v6_daddr = ireq->ir_v6_rmt_addr;
newnp->saddr = ireq->ir_v6_loc_addr;
newsk->sk_v6_rcv_saddr = ireq->ir_v6_loc_addr;
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index cc885d3aa9e5..2f1ea5f999a2 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -56,12 +56,18 @@ static int xfrm6_get_saddr(struct net *net, int oif,
{
struct dst_entry *dst;
struct net_device *dev;
+ struct inet6_dev *idev;
dst = xfrm6_dst_lookup(net, 0, oif, NULL, daddr, mark);
if (IS_ERR(dst))
return -EHOSTUNREACH;
- dev = ip6_dst_idev(dst)->dev;
+ idev = ip6_dst_idev(dst);
+ if (!idev) {
+ dst_release(dst);
+ return -EHOSTUNREACH;
+ }
+ dev = idev->dev;
ipv6_dev_get_saddr(dev_net(dev), dev, &daddr->in6, 0, &saddr->in6);
dst_release(dst);
return 0;
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-11-21 21:03:55 +0000